Finding the Fourth Proportional to 2,402.25, 3,313.39 and 1,561.39

Step by Step Solution

1. Step 1: Write the proportion equation
   2,402.25 : 3,313.39 = 1,561.39 : x
2. Step 2: Convert to fraction form
   2,402.25/3,313.39 = 1,561.39/x
3. Step 3: Cross multiply
   2,402.25x = 3,313.39 × 1,561.39
4. Step 4: Simplify right side
   2,402.25x = 5,173,469.64
5. Step 5: Solve for x
   x = 5,173,469.64/2,402.25
6. Step 6: Final answer
   x = 2,153.59